3a-1-2a=3

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Solution for 3a-1-2a=3 equation: 


Simplifying
3a + -1 + -2a = 3

Reorder the terms:
-1 + 3a + -2a = 3

Combine like terms: 3a + -2a = 1a
-1 + 1a = 3

Solving
-1 + 1a = 3

Solving for variable 'a'.

Move all terms containing a to the left, all other terms to the right.

Add '1' to each side of the equation.
-1 + 1 + 1a = 3 + 1

Combine like terms: -1 + 1 = 0
0 + 1a = 3 + 1
1a = 3 + 1

Combine like terms: 3 + 1 = 4
1a = 4

Divide each side by '1'.
a = 4

Simplifying
a = 4

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